| Year | Month | Dividend (%) |
|---|---|---|
| 2021 | Apr | 50 |
| 2020 | Dec | 20 |
| 2020 | Sep | 20 |
| 2020 | Mar | 45 |
| 2019 | May | 45 |
| 2018 | May | 40 |
| 2017 | Nov | 30 |
| 2017 | May | 40 |
| 2016 | Nov | 30 |
| 2016 | Apr | 30 |
| 2016 | Jan | 40 |
| 2015 | Apr | 30 |
| 2014 | Jul | 40 |
| 2014 | May | 30 |
| 2013 | Oct | 40 |
| 2013 | Mar | 30 |
| 2012 | Oct | 40 |
| 2012 | Mar | 30 |
| 2011 | Oct | 30 |
| 2011 | Jun | 10 |
| 2011 | Apr | 20 |
| 2010 | Nov | 20 |
| 2010 | Jul | 10 |
| 2010 | Jul | 5 |
| 2010 | Apr | 15 |
| 2009 | Oct | 15 |
| 2009 | Jun | 5 |
| 2009 | Apr | 15 |
| 2008 | Oct | 15 |
| 2008 | Jun | 5 |
| 2008 | Apr | 15 |
| 2007 | Oct | 15 |
| 2007 | Mar | 20 |
| 2006 | Oct | 15 |
| 2006 | Apr | 15 |
| 2006 | Jan | 15 |
| 2005 | Jul | 10 |
| 2005 | Apr | 10 |